Octree-Related Data Structures and Algorithms. - Kazunori Yamaguchi; Tosiyasu L. Kunii; Kikuo Fujimura; Hiroshi Toriya (IEEE Computer Graphics and Applications, 1984)

UNDO and REDO Operations for Solid Modeling. - Hiroshi Toriya; Toshiaki Satoh; Kenji Ueda; Hiroaki Chiyokura (IEEE Computer Graphics and Applications, 1986)

Boolean Operations on Solids Bounded by a Variety of Surfaces. - Toshiaki Satoh; Teiji Takamura; Hiroshi Toriya; Hiroaki Chiyokura (Modeling in Computer Graphics, 1991)

Boolean operations for solids with free-form surfaces through polyhedral approximation. - Hiroshi Toriya; Teiji Takamura; Toshiaki Satoh; Hiroaki Chiyokura (Vis. Comput., 1991)

XVL: a compact and qualified 3D representation with lattice mesh and surface for the Internet. - Akira Wakita; Makoto Yajima; Tsuyoshi Harada; Hiroshi Toriya; Hiroaki Chiyokura (Web3D, 2000)